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10 Cards in this Set
- Front
- Back
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an electromechanical _____ has contacts like a manual switch, but it is controlled by external voltage instead of being operated manually
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relay
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this relay is called _______ because at rest the contacts are touching or closed
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normally closed (NC)
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this relay is called _______because at rest, the contacts are not touching, they are open
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normally open (NO)
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this _______ is important in many digital applications and it is a feature that certain semiconductor switches cannot provide
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total isolation
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also, the contacts are normally rated for currents much higher than the current rating of _______
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semiconductor switches
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to energize the relay coil, the triggering device must supply several _______, whereas a semiconductor requires only a few _________ to operate
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milliamperes, micro amperes
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a relay is also much _____than a semiconductor
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slower
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the relay coil becomes _________, causing the relay contacts to close
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energized relay coil
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the relay is triggered by the ________
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clock waveform (cp)
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the _______ is placed across the relay coil to protect it from arching each time the coil is energized
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diode
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